Khalaf, Alias B., and Alan Omar. “\({\lambda}_{pc}\)-Open Sets and \({\lambda }_{pc}\)-Separation Axioms”. International Journal of Basic and Applied Sciences 3, no. 2 (May 26, 2014): 137–145. Accessed May 15, 2025. https://mail.sciencepubco.com/index.php/IJBAS/article/view/2521.